I like them because it makes the officers look very smart. The high collar was a recurring theme for dress clothes and casual clothes, so I'm thinking it is the style in the movie. I liked that the clothes were practical and not really strange, pointy or bright.

I loved them, nice and smart and professional. Also not being politically correct and putting female officers in skirts and boots.
Just wish they would explain the rank bars?

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I liked them as well. from what i could tell 1 bar is ensign 2 bars is lieutenant 3 bars are for Lieutenant Commanders and Commanders (if you note that Scotty had two bars on his dress uniform instead of 3 and both he and McCoy are both Lieutenant Commanders so it must have been a prop error). and four are for Captains.

Hando you are correct Pike had four gold bars because he was a full admiral.
He had on his cuffs two thin gold stripes over a thick gold stripe with one thin gold stripe below.
Marcus had the same cuff stripes, however he had five gold bars as head admiral.
Starfleet at this point doesn't seem to have any Fleet Admirals.